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@article{ARM_1989__25_1-2_a12, author = {\v{S}eve\v{c}kov\'a, Jitka and \v{S}ik, Franti\v{s}ek}, title = {Complete permutability of partitions in a set. {I}}, journal = {Archivum mathematicum}, pages = {95--102}, publisher = {mathdoc}, volume = {25}, number = {1-2}, year = {1989}, mrnumber = {1189204}, zbl = {0728.08001}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1989__25_1-2_a12/} }
Ševečková, Jitka; Šik, František. Complete permutability of partitions in a set. I. Archivum mathematicum, Tome 25 (1989) no. 1-2, pp. 95-102. http://geodesic.mathdoc.fr/item/ARM_1989__25_1-2_a12/